How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/28100.0*Average seed
Lillestrøm 4 Strømsgodset 1 -0.7
Mjøndalen 1 Sarpsborg 3 -0.2
Haugesund 1 Sandefjord 2 +0.0
Tromsø 0 Stabæk 0 +0.0
Week of 12/5100.0*Average seed
Sandefjord 3 Kristiansund 2 -0.3
Sarpsborg 0 Tromsø 1 -0.2
Strømsgodset 0 Haugesund 0 -0.1
Viking 3 Odd 1 +0.1
Week of 12/12100.0*Average seed
Haugesund 1 Molde 2 +0.3
Tromsø 0 Viking 2 +0.3
Lillestrøm 2 Sandefjord 0 +0.3
Rosenborg 2 Strømsgodset 2 -0.0
Points
Chance Will Win Championship